Cita APA

Punch Keith F. (2006). Introduction to social research: Quantitative and qualitative approaches (2.). Sage.

Citación estilo Chicago

Punch Keith F. Introduction to Social Research: Quantitative and Qualitative Approaches. 2. London: Sage, 2006.

Cita MLA

Punch Keith F. Introduction to Social Research: Quantitative and Qualitative Approaches. 2. Sage, 2006.